today

Mankind will need to venture far beyond Earth to ensure the long-term survival of our species, Professor Stephen Hawking said.

Of course Hawking may have a special short term interest - life extension by Einstein special relativity contraction, particularly if antimatter drives can be developed quickly.

I would give my own theory (based on A series plus B-series MWI) more immediate hope, as it could be more inexpensive and even quicker. However the theory in the Einstein method is by now very solid and has all been worked out, though long term it is only a partial answer to life extension.